API RP 2009 (R2020)

Provides guidelines for safely conducting welding, cutting or other hot work activities in refineries, gas plants, petrochemical plants and other facilities in the petroleum and petrochemical industries. It provides specific guidance for evaluating procedures for certain types of work on equipment in services. It does not include guidance for compliance with regulations or codes: hot tapping; welding techniques, normal, "safe work" practices; or entry or work in inert environments.